Sounds extremely high to me. For $2100 you might be able to get a brand new crate motor from your local Chevy dealer and have enough money left to pay someone to swap out the motors. The new crate motor also comes with a pretty good warranty.

First thing you need to do is diagnosis problem. Which cylinder blew the gasket. On the rear bank or front bank.Is there water in the oil, how long was it their. The rearhead takes 3 times as long as the front head to change.Many mechanic,s pull engine to do rear head. Some justdrop cradle at rear to make more room to pull rear head.If water is in oil it may have damaged rod bearings.Engine won,t last after you replace head gaskets. what made engine overheat in first place. How many miles ison vehicle? The rear head is usually beyond yourbackyard mechanic. Possibly getting close to repairsexceeding value of vehicle.

That's one of those nightmare deals -- all that plumbing and various crap in the way -- packaged construction so everything important is buried.Then, when you finally pry everything out of the way and open sesame, there's an EXPENSIVE SURPRISE.Already is going to cost a zillion dollars, go ahead and see about getting a warranteed rebuild or dealer engine replacement.

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Up hills slow,
Down hills fast
Tonnage first and
Safety last.